How to use regular expressions in JS to replace multiple spaces in a string with one space

This time I will show you how to use regular expressions in JS to replace multiple spaces in a string with one space. How to use regular expressions in JS to replace multiple spaces in a string with one space. NotesWhat are the following? Let’s take a look at the actual cases.

javascriptReducing multiple spaces in a string to one space code example:In practical applications, there may be such a need, that is, multiple spaces in a string Spaces are reduced to one space.
The following is a code example that can achieve this function.
The code is as follows:

//对字符串扩展
String.prototype.ResetBlank=function(){
 var regEx = /\s+/g; 
 return this.replace(regEx, ' '); 
};
var str="jb51.net is a good  site";
console.log(str.length);
console.log(str.ResetBlank().length);

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